A RIO device mounted to a train includes an output unit that outputs a signal to a relay mounted to the train, and a controller that controls whether or not to cause the output unit to output the signal. The output unit includes a readback circuit that detects whether or not the signal is outputted from the output unit. The controller makes a signal stop request and a signal output request to the output unit before operation of the train starts, acquires a detection result of the readback circuit while each of the signal stop request and the signal output request is performed, and detects abnormality of the output unit using the detection result.
Legal claims defining the scope of protection, as filed with the USPTO.
13. The abnormality detection method according to claim 12, further comprising a sixth step of the controller stopping supply of power to the output unit when abnormality of the output unit is detected.
14. The abnormality detection method according to claim 11, further comprising a sixth step of the controller stopping supply of power to the output unit when abnormality of the output unit is detected.
15. The abnormality detection method according to claim 14, further comprising a seventh step of the controller causing a display device to display that abnormality of the output unit is detected.
18. The abnormality detection method according to claim 17, further comprising a sixth step of the controller stopping supply of power to the output units when abnormality is detected in any of the output units.
19. The abnormality detection method according to claim 16, further comprising a sixth step of the controller stopping supply of power to the output units when abnormality is detected in any of the output units.
20. The abnormality detection method according to claim 19, further comprising a seventh step of the controller causing a display device to display that abnormality is detected in any of the output units.
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January 16, 2018
March 26, 2024
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